Those fish that clean whale's teeth
fish get food, whale gets cleaned
Answer:
Cross-sectional
Explanation:
Cross-sectional study design is an observational study design used in analyzing data gotten from a population of interest, across selected groups of people that might differ in terms of location, age, ethnicity, etc. This research study, which is also known as descriptive research, is usually conducted within the shortest time frame and are often less expensive. For example, we might use a cross-sectional study design to carry out a research on the prevalence of a certain illness in a population, of which the researcher can study people of different gender, age, location etc.
Ok, so coordination is basically using a few of your sense to help you move around. Like for instance, if you were hockey, it would let you pass the hockey puck to one of your team mates while at the same time staying on your feet on t he slippery ice. So, the most likely sport for this question, and skill, is tennis.
